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CheckPalindrome.js

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// Palindrome check is case sensitive; i.e., Aba is not a palindrome

// input is a string

const checkPalindrome = (str) => {

// check that input is a string

if (typeof str !== 'string') {

return 'Not a string'

}

if (str.length === 0) {

return 'Empty string'

}

// Reverse only works with array, thus convert the string to array, reverse it and convert back to string

// return as palindrome if the reversed string is equal to the input string

const reversed = [...str].reverse().join('')

return str === reversed ? 'Palindrome' : 'Not a Palindrome'

}

export { checkPalindrome }